Cheap flights from Buenos Aires to London-Heathrow
Cheap return flights from Buenos Aires to London-Heathrow
Find the best deals
All prices shown are per person based on return flights only. Prices found in the last 48 hours.
London-Heathrow flight facts
What you need to know
What are the cheapest airlines?
- Iberia
- Air Europa
- British Airways
These airlines usually offer the cheapest flights from Buenos Aires to London-Heathrow.
What airlines fly indirectly?
- KLM
- Air France
- Lufthansa
These airlines fly from Buenos Aires to London-Heathrow, but you’ll have at least one layover.
How long is the flight?
14 hours
This is the shortest flight time from Buenos Aires to London-Heathrow.
Alternative flights from the UK to London-Heathrow
Check out prices for other routes
Alternative flights from Buenos Aires
You might find cheaper flights nearby
Today alone, Netflights has searched over five flights. 05 / Feb / 2026 is currently the lowest priced day of the year to fly the Buenos Aires/London-Heathrow route. There are around 35 flights on any given week from the UK to London-Heathrow and the cheapest month to fly right now is February. Not suitable? Try running another search or viewing all cheap flight deals.
How to get cheap flights from Buenos Aires to London-Heathrow
Tips and advice from our flight experts
You've searched for flights from Buenos Aires to London-Heathrow. We've found 25 flights and compared them to give you the best offer. Iberia is, on average, the cheapest airline for this route, so keep an eye on them. The cheapest offer we've found is a one-way ticket for Buenos Aires to London-Heathrow on 29/01/2026 at 16:45 for £45.
We've scanned hundreds of airfares from dozens of airlines across the globe. In total, we've found 15 airlines that operate the 11,900 km flight from Buenos Aires to London-Heathrow.
To find the best offers, consider booking 2-3 months in advance or looking for last-minute deals. Traveling during the off-peak season can also save you money. A popular and affordable airline for this route is Air Europa, with an average flight duration of 14 hours. After selecting an offer, fill out your information and proceed to payment. Don't forget to check our hotel booking options or consider our flight + hotel service to save time and money.
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